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Finding the Fourth Proportional to 98,303.40, 147,455.10 and 90,700.20

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Solution

The fourth proportional to 98,303.40, 147,455.10 and 90,700.20 is: 136,050.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,303.40 : 147,455.10 = 90,700.20 : x
  2. Step 2: Convert to fraction form
    98,303.40/147,455.10 = 90,700.20/x
  3. Step 3: Cross multiply
    98,303.40x = 147,455.10 × 90,700.20
  4. Step 4: Simplify right side
    98,303.40x = 13,374,207,061.02
  5. Step 5: Solve for x
    x = 13,374,207,061.02/98,303.40
  6. Step 6: Final answer
    x = 136,050.30

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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.