Home / 91,031,570.80-136,547,356.20-90,464,700.40

Finding the Fourth Proportional to 91,031,570.80, 136,547,356.20 and 90,464,700.40

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Solution

The fourth proportional to 91,031,570.80, 136,547,356.20 and 90,464,700.40 is: 135,697,050.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,031,570.80 : 136,547,356.20 = 90,464,700.40 : x
  2. Step 2: Convert to fraction form
    91,031,570.80/136,547,356.20 = 90,464,700.40/x
  3. Step 3: Cross multiply
    91,031,570.80x = 136,547,356.20 × 90,464,700.40
  4. Step 4: Simplify right side
    91,031,570.80x = 12,352,715,669,045,082
  5. Step 5: Solve for x
    x = 12,352,715,669,045,082/91,031,570.80
  6. Step 6: Final answer
    x = 135,697,050.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.