Home / 98,991.36-136,424.88-70,312.32

Finding the Fourth Proportional to 98,991.36, 136,424.88 and 70,312.32

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Solution

The fourth proportional to 98,991.36, 136,424.88 and 70,312.32 is: 96,900.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,991.36 : 136,424.88 = 70,312.32 : x
  2. Step 2: Convert to fraction form
    98,991.36/136,424.88 = 70,312.32/x
  3. Step 3: Cross multiply
    98,991.36x = 136,424.88 × 70,312.32
  4. Step 4: Simplify right side
    98,991.36x = 9,592,349,818.52
  5. Step 5: Solve for x
    x = 9,592,349,818.52/98,991.36
  6. Step 6: Final answer
    x = 96,900.88

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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.