Home / 103,731.84-142,848.63-90,113.67

Finding the Fourth Proportional to 103,731.84, 142,848.63 and 90,113.67

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Solution

The fourth proportional to 103,731.84, 142,848.63 and 90,113.67 is: 124,095.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,731.84 : 142,848.63 = 90,113.67 : x
  2. Step 2: Convert to fraction form
    103,731.84/142,848.63 = 90,113.67/x
  3. Step 3: Cross multiply
    103,731.84x = 142,848.63 × 90,113.67
  4. Step 4: Simplify right side
    103,731.84x = 12,872,614,303.77
  5. Step 5: Solve for x
    x = 12,872,614,303.77/103,731.84
  6. Step 6: Final answer
    x = 124,095.11

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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.