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Finding the Fourth Proportional to 113,430.06, 156,531.96 and 63,129.06

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Solution

The fourth proportional to 113,430.06, 156,531.96 and 63,129.06 is: 87,117.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,430.06 : 156,531.96 = 63,129.06 : x
  2. Step 2: Convert to fraction form
    113,430.06/156,531.96 = 63,129.06/x
  3. Step 3: Cross multiply
    113,430.06x = 156,531.96 × 63,129.06
  4. Step 4: Simplify right side
    113,430.06x = 9,881,715,494.76
  5. Step 5: Solve for x
    x = 9,881,715,494.76/113,430.06
  6. Step 6: Final answer
    x = 87,117.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.