Home / 91,808,439.30-137,712,658.95-86,547,173.40

Finding the Fourth Proportional to 91,808,439.30, 137,712,658.95 and 86,547,173.40

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Solution

The fourth proportional to 91,808,439.30, 137,712,658.95 and 86,547,173.40 is: 129,820,760.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,808,439.30 : 137,712,658.95 = 86,547,173.40 : x
  2. Step 2: Convert to fraction form
    91,808,439.30/137,712,658.95 = 86,547,173.40/x
  3. Step 3: Cross multiply
    91,808,439.30x = 137,712,658.95 × 86,547,173.40
  4. Step 4: Simplify right side
    91,808,439.30x = 11,918,641,373,520,712
  5. Step 5: Solve for x
    x = 11,918,641,373,520,712/91,808,439.30
  6. Step 6: Final answer
    x = 129,820,760.10

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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.