Home / 130,928.50-180,681.33-71,312.50

Finding the Fourth Proportional to 130,928.50, 180,681.33 and 71,312.50

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Solution

The fourth proportional to 130,928.50, 180,681.33 and 71,312.50 is: 98,411.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,928.50 : 180,681.33 = 71,312.50 : x
  2. Step 2: Convert to fraction form
    130,928.50/180,681.33 = 71,312.50/x
  3. Step 3: Cross multiply
    130,928.50x = 180,681.33 × 71,312.50
  4. Step 4: Simplify right side
    130,928.50x = 12,884,837,345.63
  5. Step 5: Solve for x
    x = 12,884,837,345.63/130,928.50
  6. Step 6: Final answer
    x = 98,411.25

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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.